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76 Chapter 11: Space Warps and Particle Systems
repels particles moving in the same direction and
attracts particles moving in the opposite direction.
When Strength is 0.0, the Wind w arp has no effect.
Decay—When Decay is set to 0.0, the Wind warp
has the same streng th th roughout world space.
Increasing the Decay value c auses wind strength
to diminish as distance increases f rom the position
of the Wind warp object. Default=0.0.
Planar—Wind effect is perpendicular to the plane
of the Wind w arp object, throughout the scene.
Spherical—Wind effect is spherical, centered on
the Wind war p object.
Wind group
These settings are specific to the Wind space warp.
Tu rbulence —Causes particles to change course
randomly as the wind blows them. The greater the
value,thegreatertheturbulenceeffect.
Fr eque n cy—When set greater than 0.0, causes
turbulence to vary periodically over t ime. This
subtle effect is probably not visible unless your
bound particle system generates a large number
of particles.
Scale—Scalestheturbulenceeffect. WhenScale
is small, turbulence is smoother and more
regular. As Scale increases, turbulence grows more
irr egular and wild.
Display group
R ange I ndicators—WhentheDecayvalueisgreater
than zero, icons appear in the viewp orts that
representtherangeatwhichtheforceofwind
is h alf the maxi mum value. When you use the
Planar option, the indicators are two planes; when
you use the Spherical option, the indicator is a
double-hooped sphere.
Icon Size—Size of the W ind warp object icon, in
active units. You set the initial Icon Size value
when you drag to create the w ind object. This
value does not change the wind effect.
Displ ace S pace War p
Create panel > Space Warps > G eom etric/Deformable >
Object Type rollout > Displace
Create menu > Space Warps > Geometric/Deformable >
Displace
Displace used to change the surface in the container
The Displace space warp acts as a force field to
push and reshape an object’s geometry. Displace
affects both geometry (deformable objects) and
particle systems. There are two basic ways to use
the Displace space warp :
• Apply the gray scale of a bitmap to generate
the displacement a mount. Black areas of the
2D image are not displaced. Whiter areas
push outward, causing a 3D displacement of
geometry.
• Apply displacement directly by setting
displacement Strength and Dec ay values.
The Displace space warp works similarly to the
Displace modifier, except that, like all space warps,
it affects world sp ace rather than object space.
Use the Displace modifier when you need to
create detailed displacement of a small number of
objects. Use the Displace space w arp to displace